Abundance: 0.01 to 27.33% (median 0.50%)

Latitudinal range: 28.1° to 67.8°

Habitats: (20), boreal forest/taiga (1), temperate broadleaf/mixed forest (3)

Found in 24 samples

Canada: Churchill (1952), Old Crow River Loc. 11A (square S30E120), Caverne de la Mine (lower infill)

United States: Fort Necessity National Battlefield, MacIntyre Development (forest habitats), Suffolk, Ardis, Zesch Cave, Saber-tooth Cave, Golf Course, Harrodsburg Crevice, Ripplemead, Bat Cave, Hosterman's Pit, Prairie Creek (Zone D), Robinson Cave, Meyer Cave, Bootlegger Sink, Prairie Creek (Zone C), Schulze Cave (layer C1), Schulze Cave (layer C2), New Paris Sinkhole No. 4, Natural Chimneys, Cumberland Cave

See also Synaptomys australis, Synaptomys borealis, Synaptomys cooperi, Synaptomys sp.